ECZ 2019 · GCE Paper 1 — Matrices
Given that S = 10-4-211, find ST.
- A. [1 −2; 0 1; −4 1]
- B. [−4 0 1; 1 1 −2]
- C. [1 0 −4; −2 1 1]
- D. [−2 1 1; 1 0 −4]
Verified working — step 1
A transpose turns each ROW into the matching COLUMN, so a 2 × 3 matrix becomes a 3 × 2 matrix.The full step-by-step working and final answer, plus the video lesson for this topic, are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
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